See bug #113302 where I had described it already:

In "Printer Configuration" main menue using [Add] leads to a
popup warning which is in fact only a question:

  Warning:
  Do you want to configure new queue?
  [Yes] [No]

This is misleading for the user because:

When I answer [Yes], I get an additional queue
for the selected printer.

I must answer [No] to configure a "really" new queue.
This makes no sense for me because I do want to set up a
new queue but not for one of the autodetected printes
but for another printer (e.g. for a network printer which
cannot be autodetected).